Nation

Lockdown delays cost at least 36,000 lives, researchers estimate

NEW YORK — If the United States had begun imposing social distancing measures one week earlier than it did in March, about 36,000 fewer people would have died in the coronavirus outbreak, according to new estimates from Columbia University disease modelers.

And if the country had begun locking down cities and limiting social contact on March 1, two weeks earlier than most people started staying home, the vast majority of the nation’s deaths — about 83 percent — would have been avoided, the researchers estimated.

Under that scenario, about 54,000 fewer people would have died by early May.

Advertisement

The enormous cost of waiting to take action reflects the unforgiving dynamics of the outbreak, which swept through American cities in early March. Even small differences in timing would have prevented the worst exponential growth, which by April had subsumed New York City, New Orleans, and other major cities, the researchers found.

Get Today in Politics in your inbox:
A digest of the top political stories from the Globe, sent to your inbox Monday-Friday.
Thank you for signing up! Sign up for more newsletters here

“It’s a big, big difference. That small moment in time, catching it in that growth phase, is incredibly critical in reducing the number of deaths,” said Jeffrey Shaman, an epidemiologist at Columbia and the leader of the research team.

The findings are based on infectious disease modeling that gauges how reduced contact between people starting in mid-March slowed transmission of the virus. Shaman’s team modeled what would have happened if those same changes had taken place one or two weeks earlier and estimated the spread of infections and deaths until May 3.

The results show that as states reopen, outbreaks can easily get out of control unless officials closely monitor infections and immediately clamp down on new flare-ups. And they show that each day that officials waited to impose restrictions in early March came at a great cost.

After Italy and South Korea had started aggressively responding to the virus, President Trump resisted canceling campaign rallies or telling people to stay home or avoid crowds. The risk to most Americans was very low, he said.

Advertisement

“Nothing is shut down, life & the economy go on,” Trump tweeted on March 9, suggesting that the flu was worse than the coronavirus. “At this moment there are 546 confirmed cases of CoronaVirus, with 22 deaths. Think about that!”

In fact, tens of thousands of people had already been infected by that point, researchers later estimated. But a lack of widespread testing allowed those infections to go undetected, hiding the urgency of an outbreak that most Americans still identified as a foreign threat.

In a statement released Wednesday night in response to the new estimates, the White House reiterated Trump’s assertion that restrictions on travel from China in January and Europe in mid-March slowed the spread of the virus.

On March 16, Trump urged Americans to limit travel, avoid groups, and stay home from school. Mayor Bill de Blasio closed New York City’s schools on March 15, and Governor Andrew Cuomo issued a stay-at-home order that took effect on March 22. Changes in personal behavior across the country in mid-March slowed the epidemic, a number of disease researchers have found.

But in cities where the virus arrived early and spread quickly, those actions were too late to avoid a calamity. In the New York metro area alone, 21,800 people had died by May 3. Fewer than 4,300 would have died by then if control measures had been put in place and adopted nationwide just a week earlier, on March 8, the researchers estimated.

Advertisement

All models are only estimates, and it is impossible to know for certain the exact number of people who would have died. But Lauren Ancel Meyers, a University of Texas Austin epidemiologist who was not involved in the research, said it “makes a compelling case that even slightly earlier action in New York could have been game changing.”

“This implies that if interventions had occurred two weeks earlier, many COVID-19 deaths and cases would have been prevented by early May, not just in New York City but throughout the US,” Meyers said.

The fates of specific people cannot be captured by a computer model. But there is a name, a story, and a town for every person who was infected and later showed symptoms and died in March and early April. Around the country, people separate from this study have wondered what might have been.

It was a Friday night in mid-March when Devin Taquino began feeling sick. Neither he nor his wife was thinking about the coronavirus. There were already more than 200 cases in the state by that time, but most were in the eastern part of the state, not in the small city of Donora, south of Pittsburgh.

Plus, Taquino did not fit the profile: he was only 47 years old with no underlying conditions and his main symptom, diarrhea, was not something broadly associated with the disease. He was planning to work a Saturday morning overtime shift at a call center half an hour away, but called in sick. Offices all over the area were asking people not to come in, but Taquino’s had not taken that step.

He worked on Monday, but on Tuesday returned home sick from work, passed out in bed, and didn’t wake up for 16 hours. The next morning, his wife, Rebecca Taquino, 42, woke him and told him they needed to get tested. She didn’t think he had the virus, but she thought it was the smart thing to do.

Lacking primary care doctors, they went to a nearby urgent care clinic, where they learned his blood oxygen level was very low. The people at the clinic offered to call an ambulance, but fearing the cost, and still skeptical it was that serious, the Taquinos drove to an emergency room.

At the hospital, he was given an X-ray and diagnosed with pneumonia. He stayed, kept in an isolation unit just in case, and she returned home. The next evening, March 26, he called her with two developments. One: His work had e-mailed the news that someone at the call center, where the work stations sat about a foot apart, had tested positive for the virus. The other bit of news was that he had tested positive.

There has been a lot for Rebecca Taquino to think about in the weeks since that phone call, including the long days during which she never left the house and her husband’s situation got more horrifyingly worse.

Should the call center have sent the employees home earlier? When she called the center on Friday to report his condition, it was already empty: The workers had been sent home. Did they act too late?

“I kind of tossed that one back and forth myself,” she said. “I really want to blame it on them, I really do.”

Could she know definitively where he got it? It was hard to say for sure. Still, given that e-mail the day of his diagnosis, it seemed the most likely possibility that he got it at work.

After three weeks of agony, Devin Taquino died on April 10. Whether he was one of the thousands of people who might be alive if social distancing had been put in place a week earlier can never be known.

Rebecca Taquino said officials should have known.

“If it’s spreading that fast you have to know it would have come here,” she said. “They should have been implementing programs. I think it was a giant lapse in our country. There was no way to think that we were going to be spared from this.”